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Cassava Metabolomics and Starch Quality.

Laise Rosado-Souza1, Laure C David2, Margit Drapal3

  • 1Max Planck Institute of Molecular Plant Physiology, Potsdam-Golm, Germany.

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|December 14, 2019
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Summary

Cassava

Keywords:
Manihot esculentachemotypesmetabolite classificationmetabolite profilingmetabolomics

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Area of Science:

  • Plant Metabolism
  • Agricultural Science
  • Biochemistry

Background:

  • Cassava is a vital staple food for over 800 million people globally.
  • Despite its importance, cassava's tissue-specific metabolism and composition remain underexplored.
  • Recent research has increased focus on cassava breeding and scientific investigation.

Purpose of the Study:

  • To comprehensively profile the absolute metabolic content of various cassava tissues.
  • To establish standardized protocols for analyzing cassava metabolites, adaptable for field samples.
  • To quantify both primary and secondary metabolites, alongside essential quality parameters.

Main Methods:

  • Utilized gas chromatography-mass spectrometry (GC-MS) for metabolic profiling.
  • Employed ion chromatography-mass spectrometry (IC-MS) for organic acids and phosphorylated intermediates.
  • Applied non-targeted and targeted metabolomics for secondary metabolite quantification.

Main Results:

  • Detailed absolute quantification of sugars, organic acids, amino acids, minerals, and more.
  • Characterization of starch quality and key phytochemicals like carotenoids and tocopherols.
  • Developed adaptable protocols for freeze-dried cassava material, enabling remote sample analysis.

Conclusions:

  • Provides a foundational dataset for cassava's metabolic composition across different tissues.
  • Establishes robust analytical methods for future cassava research and breeding programs.
  • Facilitates a deeper understanding of cassava's nutritional value and biochemical pathways.